A vehicular vision system includes a plurality of cameras mounted at the vehicle and having respective fields of view exterior of the vehicle. The cameras include a video output for transmitting a stream of video to a control via a serial data bus linking the respective camera to the control. The control includes a serial data interface for communication with at least one electronic device of the vehicle. The control sends instructions to the cameras via the respective serial data bus linking the camera to the control. The control activates one of the cameras and deactivates at least one other of the cameras responsive to (i) a user input and/or (ii) a driving condition. Video images derived at least in part from image data captured by the activated camera are displayed at a video display screen of the vehicle for viewing by a driver of the vehicle.